/* ============================================================
   da-base.css — 深度助手 基础主题 + 布局
   布局：<main class="pt-20 da-page"> + inline flex 列
   移动端：da-mobile.css 用 main.da-page 覆盖 index.html 规则
   ============================================================ */

/* --- CSS 变量（暗色默认） --- */
:root {
    --da-bg-primary: #0d1117;
    --da-bg-secondary: #161b22;
    --da-bg-tertiary: #21262d;
    --da-border: #30363d;
    --da-text-primary: #e6edf3;
    --da-text-secondary: #8b949e;
    --da-accent-blue: #58a6ff;
    --da-accent-green: #3fb950;
    --da-accent-purple: #a371f7;
    --da-accent-orange: #f0883e;
    --da-accent-red: #f85149;
    --da-accent-indigo: #6366f1;
    --da-ai-bubble-bg: #161b22;
    --da-ai-bubble-border: #30363d;
    --da-input-bg: #21262d;
    --da-input-border: #30363d;
    --da-radius-sm: 8px;
    --da-radius-md: 12px;
    --da-radius-lg: 16px;
    --da-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --da-shadow-md: 0 4px 16px rgba(0,0,0,0.4);
}

/* --- 浅色模式 --- */
[data-theme=light] {
    --da-bg-primary: #FAFBFC;
    --da-bg-secondary: #FFFFFF;
    --da-bg-tertiary: #F1F3F7;
    --da-border: #E2E6EF;
    --da-text-primary: #1A1D26;
    --da-text-secondary: #5A6478;
    --da-accent-blue: #3B6FE8;
    --da-accent-green: #059669;
    --da-accent-purple: #8B5CF6;
    --da-accent-orange: #D97706;
    --da-accent-red: #DC2626;
    --da-accent-indigo: #4f46e5;
    --da-ai-bubble-bg: #FFFFFF;
    --da-ai-bubble-border: #E2E6EF;
    --da-input-bg: #FFFFFF;
    --da-input-border: #D1D5DB;
    --da-shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --da-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

/* --- DA Page 主框架（PC 默认，移动端由 da-mobile.css 覆盖） --- */
main.da-page {
    padding-bottom: 0;
    height: calc(100dvh - 80px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
/* --- 安全屋 Banner --- */
.safehouse-banner {
    display: none;
    padding: 6px 14px;
    background: rgba(240,136,62,0.12);
    border-bottom: 1px solid rgba(240,136,62,0.3);
    color: var(--da-accent-orange);
    font-size: 12px;
    text-align: center;
    flex-shrink: 0;
}
.safehouse-banner.show { display: block; }

/* --- 能力标签 --- */
.capability-indicator {
    display: none;
    padding: 5px 14px;
    gap: 5px;
    flex-wrap: wrap;
    flex-shrink: 0;
    border-bottom: 1px solid var(--da-border);
}
.capability-indicator.show { display: flex; }

.cap-tag {
    padding: 2px 7px;
    border-radius: 6px;
    font-size: 10px;
    font-weight: 500;
}
.cap-tag.llm { background: rgba(88,166,255,0.15); color: var(--da-accent-blue); }
.cap-tag.web_search { background: rgba(63,185,80,0.15); color: var(--da-accent-green); }
.cap-tag.multi_step { background: rgba(163,113,247,0.15); color: var(--da-accent-purple); }
.cap-tag.code_exec { background: rgba(240,136,62,0.15); color: var(--da-accent-orange); }
.cap-tag.safehouse { background: rgba(248,81,73,0.15); color: var(--da-accent-red); }

/* --- DA Header --- */
.da-header {
    padding: 10px 16px;
    border-bottom: 1px solid var(--da-border);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: var(--da-bg-primary);
}
.da-header-left { display: flex; align-items: center; gap: 8px; }
.da-header-logo {
    width: 26px; height: 26px; border-radius: 7px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    flex-shrink: 0;
}
.da-header-title { font-size: 16px; font-weight: 700; color: var(--da-text-primary); }
.da-header-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.da-header-btn {
    display: flex; align-items: center; gap: 4px;
    padding: 6px 10px; font-size: 12px; font-weight: 500;
    color: var(--da-text-secondary); background: var(--da-bg-primary);
    border: 1px solid var(--da-border); border-radius: 8px;
    cursor: pointer; transition: all .15s; white-space: nowrap;
}
[data-theme=light] .da-header-btn { background: #fff; }
.da-header-btn:hover { color: var(--da-text-primary); border-color: var(--da-accent-indigo); }
.da-header-btn.primary { color: #fff; background: linear-gradient(135deg, #6366f1, #8b5cf6); border: none; }
.da-header-btn.primary:hover { opacity: 0.9; box-shadow: 0 3px 12px rgba(99,102,241,0.35); }
[data-theme=light] .da-header-btn.primary { color: #fff !important; background: linear-gradient(135deg, #6366f1, #8b5cf6) !important; }
.da-header-btn.active { color: #f0883e; border-color: #f0883e; background: rgba(240,136,62,0.1); }
[data-theme=light] .da-header-btn.active { color: #d97706; border-color: #d97706; background: rgba(217,119,6,0.08); }

@media (max-width: 640px) {
    .da-header-btn-label { display: none; }
    .da-header-btn { padding: 6px 8px; }
    .da-header-title { font-size: 14px; }
}

/* --- 对话框滚动区 --- */
.chat-container {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px 14px;
    scroll-behavior: smooth;
    overscroll-behavior: contain;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* --- 消息体容器（修复移动端竖向排列的核心规则） --- */
.msg-body {
    flex: 1 1 0%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
/* --- 反馈评分占位（在思考过程下方、msg-body 内部） --- */
.da-feedback-placeholder { margin-top: 2px; }
.askintell-da-feedback {
    display: flex; align-items: center; gap: 6px;
    padding: 4px 0; font-size: 11px;
    color: var(--da-text-secondary); opacity: 0.7;
    transition: opacity 0.15s;
}
.askintell-da-feedback:hover { opacity: 1; }
.da-feedback-label { font-size: 11px; flex-shrink: 0; }
.da-star-btn {
    background: none; border: none; cursor: pointer;
    font-size: 12px; padding: 1px 2px; opacity: 0.7;
    transition: opacity 0.15s; color: inherit;
}
.da-star-btn:hover { opacity: 1; }

/* --- 空状态 --- */
.empty-state {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    height: 100%; gap: 8px; padding: 40px 14px; opacity: 0.6;
}
.empty-state-icon { margin-bottom: 4px; }
.da-empty-logo { width: 48px; height: 48px; border-radius: 12px; overflow: hidden; background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.da-empty-logo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.empty-state-text { font-size: 15px; color: var(--da-text-secondary); }
.empty-state-hint { font-size: 12px; color: var(--da-text-secondary); opacity: 0.5; }

/* --- 输入区域（浮层效果） --- */
.input-area {
    display: flex; align-items: flex-end; gap: 6px;
    padding: 12px 14px;
    padding-bottom: max(12px, env(safe-area-inset-bottom, 12px));
    border-top: 1px solid var(--da-border);
    background: rgba(13, 17, 23, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px 16px 0 0;
    box-shadow: 0 -2px 20px rgba(0,0,0,0.25);
    flex-shrink: 0;
    position: relative;
    z-index: 5;
    transition: padding 0.2s ease, border-radius 0.2s ease;
}

[data-theme=light] .input-area {
    background: rgba(250, 251, 252, 0.94);
    box-shadow: 0 -2px 16px rgba(0,0,0,0.08);
}

.input-wrapper { flex: 1; position: relative; display: flex; align-items: flex-end; gap: 6px; }

.input-wrapper textarea {
    flex: 1;
    padding: 8px 12px; font-size: 14px;
    color: var(--da-text-primary); background: var(--da-input-bg);
    border: 1px solid var(--da-input-border); border-radius: 10px;
    resize: none; outline: none;
    min-height: 40px; max-height: 240px;
    line-height: 1.5; font-family: inherit;
    transition: border-color 0.2s, height 0.15s ease;
}
.input-wrapper textarea:focus {
    border-color: var(--da-accent-indigo);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.input-wrapper textarea::placeholder { color: var(--da-text-secondary); opacity: 0.5; }

/* ====== 附件按钮 ====== */
.file-attach-btn {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 40px; flex-shrink: 0;
    border-radius: 8px; border: 1px solid var(--da-input-border);
    background: var(--da-input-bg); color: var(--da-text-secondary);
    cursor: pointer; transition: all .15s;
}
.file-attach-btn:hover { color: var(--da-accent-indigo); border-color: var(--da-accent-indigo); }

/* ====== 语音按钮 ====== */
.voice-btn {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; flex-shrink: 0;
    border-radius: 10px; border: 1px solid var(--da-input-border);
    background: var(--da-input-bg); color: var(--da-text-secondary);
    cursor: pointer; transition: all .15s;
}
.voice-btn:hover { color: var(--da-accent-indigo); border-color: var(--da-accent-indigo); }
.voice-btn.recording { color: var(--da-accent-red); border-color: var(--da-accent-red); background: rgba(248,81,73,0.1); }

/* ====== 发送按钮 ====== */
.send-btn {
    padding: 8px 14px; font-size: 13px; font-weight: 600;
    color: #fff; background: var(--da-accent-indigo);
    border: none; border-radius: 10px; cursor: pointer;
    transition: all 0.15s; white-space: nowrap;
    min-height: 40px; display: flex; align-items: center; gap: 3px; flex-shrink: 0;
}
.send-btn:hover:not(:disabled) { opacity: 0.9; box-shadow: 0 3px 12px rgba(99,102,241,0.35); }
.send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
[data-theme=light] .send-btn { color: #fff !important; background: #6366f1 !important; }

/* 停止按钮 */
.send-btn.stop { background: #ef4444 !important; color: #fff !important; }
.send-btn.stop:hover { background: #dc2626 !important; }
.send-btn.stop svg { display: none; }

/* ====== 图片预览条 ====== */
.image-preview-chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 6px 14px 0; flex-shrink: 0; }
.image-preview-chip {
    position: relative; width: 56px; height: 56px;
    border-radius: 8px; overflow: hidden;
    border: 1px solid var(--da-border); flex-shrink: 0;
}
.image-preview-chip img { width: 100%; height: 100%; object-fit: cover; }
.image-preview-chip .remove-chip {
    position: absolute; top: 2px; right: 2px;
    width: 18px; height: 18px; border-radius: 50%;
    background: rgba(0,0,0,0.6); color: #fff;
    border: none; font-size: 10px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; line-height: 1;
}

/* ====== 文件拖拽区 ====== */
.file-drop-zone {
    display: none; position: absolute; inset: 4px;
    background: rgba(99,102,241,0.08); border: 2px dashed var(--da-accent-indigo);
    border-radius: 12px; z-index: 10;
    align-items: center; justify-content: center;
    font-size: 13px; color: var(--da-accent-indigo); pointer-events: none;
}
.file-drop-zone.show { display: flex; }